Intradiffusion and viscosity measurements in acidified iron(III) chloride solutions at 25°C |
| |
Authors: | Allan J Easteal Rakesh Malhotra William E Price Lawrence A Woolf |
| |
Institution: | (1) Department of Chemistry, University of Auckland, New Zealand;(2) Diffusion Research Unit, Research School of Physical Sciences Australian National University, 2600, ACT, Australia;(3) Department of Chemistry, University of Wollongong, 2500 Wollongong, NSW, Australia |
| |
Abstract: | Intradiffusion of species in acidified (using eithe hydrochloric or perchloric acid) iron(III) chloride solutions has been
studied using labeled iron(III), chloride and water. Comparison with data for iron(III) perchlorate has enabled the influence
of complexed species upon the diffusion to be ascertained. The chloro-iron species formed have larger diffusion coefficients
than the free iron(III) ion as would be expected from their lower net charge. Simple diffusion models have been employed to
enable estimates of the diffusion of the complexed species and of the free chloride diffusion coefficients to be obtained.
These are discussed in relation to literature data for similar systems. In addition esitmates of the effective hydration of
the iron(III) species in solutions have been obtained from the diffusion data. These are discussed in relation to two other
trivalent metal salt systems, chromium chloride and lanthanum chloride; the overall hydration of the three cations is virtually
identical. |
| |
Keywords: | Intradiffusion iron(III) chloride complexation |
本文献已被 SpringerLink 等数据库收录! |
|